Welcome to the forum!
I'm sorry to hear that things are really tough for you right now. Not being able to sleep is frustrating too. Do you often find yourself awake in the early hours of the morning? Is your doctor helping you with the meds adjustment? I hope you have a kind doctor who you feel comfortable talking to. Please talk to your doctor about the suicidal thoughts. It's crucial that this information is not kept to yourself. When you are at home and are having these bad thoughts, you can call Lifeline's 24/7 helpline on 13 11 14. This service is free and confidential, and available Australia-wide.
If you don't mind me asking, do you live alone? When you said you don't have much support, I was wondering about that. Living alone when you are struggling with your mental health is a lot of pressure.
So that this message isn't all heavy, I thought I'd say a little about myself. I'm a 24 year old female, live at home with my family, have a caring boyfriend, and I'm about to start studying postgraduate counselling/psychotherapy at university. I was diagnosed with OCD at 13, and I had an eating disorder at 19. I enjoy reading, communicating on this forum, walking and eating good food.
When you were well, what did you enjoy in your spare time? You can hopefully enjoy similar things in the future. It may not feel within reach now, but with regular professional support you can get there.
It would be great to hear back from you :)